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Commitments And Contingencies (Schedule Of Product Warranty Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 38	$ 29	$ 36	$ 25
Warranty expense recognized	2	2	5	8
Warranty credits issued	(1)	(1)	(2)	(3)
Balance at end of period	$ 39	$ 30	$ 39	$ 30

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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